Peter h



P. H. JACKSON;

lSTEERING APPARATUS. No.7 7,288. Patented Apr. 281, 1868 Hmmm al PETERWH. JACKSON, 0F- NE'W l-Yc'RK, N. Y

Letters Patent No. '(7,28 8,- dated April 28, 1868.

IMPROVEMENT IN STEERINGeAPPARAIUS @te rlgshnle referrer 'tu in tiges @statement tnt mating niet inf-tige rame.

To ALL WHOM 1r MAY concentra.

Be it 'known that I, Persa H. JAcKsoN, of --the city and State of New'Y-orkrhave invented'and made a certain new and useful Improvementin Steering-Apparatus ,'for Vessels.; and I dol hereby declare the following to be a full, clear, and exact description of the said inventiomreference being had tothe annexed drawing, making part of this specication, wherein- .v Figure Ifis a, plan of said apparatus.

Figure 2 is a side elevation of the same.

Figure 3 is an elevation of ythe boxes for the screw, endwise of the shaft and Figure 4 is a section of the box or bearing lon'gitudinaily of the shaft.

Similar Vmarks of reference denote the same parts. l

A. steering-apparatus has heretofore beenlmade, in which-a shaft with a right-and-lef'tscnewthread upon it has lieenplaced across the upper endet' the rudder-head, and rotated lby the steering-wheel, the motion being communicated from n-uts by links, jointed at the respective ends .to the nuts, and to vertical studs on the rudderhead, and also double-jointed between these points, so as to allow the rudder-head to work as the ship moves.

With this construction there are so manyijoints that diiculty-is experienced in the parts' becomingl loose, bent,

or.V twisted, 'under thestrain to which'it is frequently subjected.

. The vnature of-rny said invention consists in two nuts upon a right'and leftshanded screw, that is set in vertical sliding boxes, in combination with arms that extend in pairs from `such nuts to vertical gudgeons' on the rudder-head, said arm's having at their` respective ends joints-connecting with the nuts, and sleevessetting over said gudgeons,

By this construction and arrangement, the steeringapparatus is made much-stronger than heretofore, and less liable to injury in use, because there are but' few joints, andfthose of the strongest character. and there is no opportunity for injury'. in consequenceof leverage strain of one part on the other.

I also monnt tlie screw-shaft in vertically-'sliding boxes, so that the rudder-stock is allowed to rise -or fall by the working of the ship', or byl the-stern running aground, `thus-relieving the screw from friction-and strain,

but keeping it inthe proper position for acting upon 'the rudder.

In the drawing, a represents a. portion( ofthe deck, b the upper' end of the rudder-stock. c is 'the shaft, formed. with right 'and left-hand screw-threads, and receiving at the end the steering-wheel d. e e are the boxes for tlc shaft c, formed with sliding tenonsfon their under sides, entering' corresponding mortises in theupper ends of the supporting-frames y,'so that the'shaft and its boxes can move vertically when the rudder-stook rises o'rfnlls.

From the band 7i of the rudder-head, the vertical gudgeons z' project, and receive the sleeve portions k of the arms Z, thnt'are united by the hingelbolts or joints .to the nuts m, upon-th screw-shaft c, undp is a bar .connecting the upper-ends of the gudgeons t'.

It will now be understood that 4thesleeve portions 7.1,'-being at right angles to theA arms Z, the screw-nuts and arms all receive their supportfrom the rudder-head, and they-`are very strong. There are no loose joints, und the strain cannot bend or injure any of the parts when made proportionally strong,- and a seajstrikiug the rudder does not move the steering-wheel.

When the screw c is rotated in one direction, the nuts m, 'being brought nearer together, turn thei'rudder one way, and the reverse movement turns the rudder the otherway, and tlievarms'l acting as toggl'eson each side of lthe screw, the strain isl balanced, and there is nothing tending to twistany of the parts.

The joints n are made as shown in Figure l5., the nut m having bosses or circular projections, that enter cavitiesin the arms l, so'that strain upo'h the bolt is removed.

What I claim, and desire to secure by Letters Patent, is l y The right and left-handedscrew-shaft c, set in .vertical sliding boxes, in combination with the arms'l, that are jointed in pairs to the nuts m, and extend to the gudgeons of therudder-head, as and for 'the purposes specified.

In witness whereof, I have hereunto set my signature, this eighteenth day of October, A. D. 1867.

PETER H. JACKSON.

Witnesses:

Cms. H. SMITH, Gao. D. WALKER. 

